Add .editorconfig file to MIEngine (microsoft#1103)

This adds a .editorconfig file. This is based on the Concord repo's file with additional changes from https://github.com/dotnet/runtime/blob/master/.editorconfig

Author: gregg-miskelly

.editorconfig

@@ -0,0 +1,57 @@
+# EditorConfig is awesome: http://EditorConfig.org
+# This configuration is respected by multiple editors
+# Using basic settings to unify indentation in repo
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = crlf
+trim_trailing_whitespace = true
+
+# XML Formats
+
+[*.{xml,csproj,androidproj,vcxproj,vcxproj.filters,nuspec,vsct,resx,config,targets,props,xsd,natvis,playlist}]
+indent_size = 2
+
+# JSON and YML
+[*.yml]
+[*.json]
+indent_size = 2
+
+# .NET
+
+[*.cs]
+file_header_template = // Copyright (c) Microsoft. All rights reserved.\n// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+dotnet_sort_system_directives_first = false
+
+# static fields should have s_ prefix
+dotnet_naming_rule.static_fields_should_have_prefix.severity = warning
+dotnet_naming_rule.static_fields_should_have_prefix.symbols  = static_fields
+dotnet_naming_rule.static_fields_should_have_prefix.style    = static_prefix_style
+dotnet_naming_symbols.static_fields.applicable_kinds   = field
+dotnet_naming_symbols.static_fields.required_modifiers = static
+dotnet_naming_symbols.static_fields.applicable_accessibilities = private, internal, private_protected
+dotnet_naming_style.static_prefix_style.required_prefix = s_
+dotnet_naming_style.static_prefix_style.capitalization = camel_case
+
+# internal and private fields should be _camelCase
+dotnet_naming_rule.camel_case_for_private_internal_fields.severity = warning
+dotnet_naming_rule.camel_case_for_private_internal_fields.symbols  = private_internal_fields
+dotnet_naming_rule.camel_case_for_private_internal_fields.style    = camel_case_underscore_style
+dotnet_naming_symbols.private_internal_fields.applicable_kinds = field
+dotnet_naming_symbols.private_internal_fields.applicable_accessibilities = private, internal
+dotnet_naming_style.camel_case_underscore_style.required_prefix = _
+dotnet_naming_style.camel_case_underscore_style.capitalization = camel_case
+
+dotnet_style_readonly_field = true:warning
+
+# Unix Shell scripts
+[*.sh]
+charset = utf-8
+end_of_line = lf
+
+[*.sln]
+indent_style = tab

src/MIDebugEngine.sln

@@ -9,6 +9,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Android", "Android", "{2865
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{CF02407C-BF37-4D51-83F4-845A7F36C101}"
 	ProjectSection(SolutionItems) = preProject
+		..\.editorconfig = ..\.editorconfig
 		IDECodeAnalysis.ruleset = IDECodeAnalysis.ruleset
 	EndProjectSection
 EndProject
@@ -59,7 +60,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.VisualStudio.Debu
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MIDebugPackage", "MIDebugPackage\MIDebugPackage.csproj", "{A8D8E02F-4258-4F2E-88B6-A50FEBD5AD8C}"
 	ProjectSection(ProjectDependencies) = postProject
-			{15BCBEF4-1C2B-412B-925B-34A049097E62} = {15BCBEF4-1C2B-412B-925B-34A049097E62}
+		{15BCBEF4-1C2B-412B-925B-34A049097E62} = {15BCBEF4-1C2B-412B-925B-34A049097E62}
 	EndProjectSection
 EndProject
 Global